body {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
}
body a {
  text-decoration: none;
  color: black;
}
body header {
  height: 50px;
  background-color: #f2f2f2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 15px;
}
body header .btn-back a i {
  font-size: 30px;
}
body header .title h1 {
  font-size: 18px;
}
body header .detail a i {
  font-size: 18px;
}
body main {
  height: 100px;
  flex-grow: 1;
}
body footer {
  height: 50px;
  background-color: #f2f2f2;
  box-sizing: content-box;
  border-top: solid 1px #d2d4d6;
}
body footer .keyboard {
  height: 50px;
  float: left;
  display: flex;
  align-items: center;
  flex-grow: 1;
  justify-content: center;
  font-size: 28px;
  box-sizing: border-box;
}
body footer .keyboard a {
  padding: 0 15px;
  line-height: 28px;
  border-right: solid 1px #d2d4d6;
}
body footer .meau {
  height: 50px;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
}
body footer .meau .meau-box {
  display: flex;
  flex-grow: 1;
  justify-content: center;
  align-items: center;
  line-height: 28px;
  border-right: solid 1px #d2d4d6;
}
body footer .meau .meau-box:last-child {
  border-right: none;
}
body footer .meau .meau-box input[type='checkbox'] {
  display: none;
}
body footer .meau .meau-box input[type='checkbox']:checked + .meau-other {
  display: block;
}
body footer .meau .meau-box .meau-1 {
  position: relative;
}
body footer .meau .meau-box .meau-2 i {
  font-size: 13px;
}
body footer .meau .meau-box .meau-other {
  position: absolute;
  display: none;
  bottom: 60px;
  border: solid 1px #d2d4d6;
  border-radius: 3px;
  padding: 5px 10px;
}
body footer .meau .meau-box .meau-other ul li {
  padding: 2px 0;
  border-bottom: solid 1px #d2d4d6;
}
